Quote: Originally Posted by cat68
Meant to say previous owner or his engine tech or the Arctic cat dealer he works with have never seen a broken power valve on this engine. The Cat dealer wanted the broken valve back to inspect.
its actually somewhat of a common failure on older 600 mods, like the 2006,7 sleds. In 07 they made an improved valve which they said would reduce the problem. never said it would cure it, funny. If you look at the 440 race forum on hcs you can read about more incidents with this. if your dealer was more into the racing scene, he would probly know about it.